Mozzullphone Spherical Variometer
Mozzullphone (Brand), BDS Wireless Ltd.; Birmingham
- Country
- Great Britain (UK)
- Manufacturer / Brand
- Mozzullphone (Brand), BDS Wireless Ltd.; Birmingham
- Year
- 1925 ?
- Category
- Radio module pre 1926 (not a part, not a key)
- Radiomuseum.org ID
- 371346
- Main principle
- RF-Circuit or wave trap (separate, can also be an antenna with amp.)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- No Power needed
- Loudspeaker
- - - No sound reproduction output.
- Material
- Various materials
- from Radiomuseum.org
- Model: Mozzullphone Spherical Variometer - Mozzullphone Brand, BDS
- Shape
- Chassis only or for «building in»
- Notes
-
The Mozzullphone Spherical Variometer was introduced by BDS Wireless Co. Ltd., as a high‑quality tuning component for crystal and valve receivers. Its spherical rotor‑stator design allowed smooth inductive coupling adjustment, enabling reception across BBC wavelengths from 260 to 600 metres.
The advertisement emphasized mechanical strength, precision moulding, and the use of first‑quality ebonite.1925 Price: 6/-.
- Price in first year of sale
- 0.30 £
- Mentioned in
- -- Original prospect or advert (Broadcaster & Wireless Retailer, Apr 1925, p.20.)
- Author
- Model page created by Gary Cowans. See "Data change" for further contributors.
- Other Models
-
Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Mozzullphone (Brand), BDS Wireless Ltd.; Birmingham